diff --git a/.gitignore b/.gitignore
index c359d7f..489c2e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-*.state
+*.long
diff --git a/README.md b/README.md
index f3fd3b4..21b03cf 100644
--- a/README.md
+++ b/README.md
@@ -6,13 +6,10 @@
 This is a simple collection of i3blocks-modules accompagnied by a config file with the aim to display only important information in favor of not spilling lots of numbers into the status bar.
 
 # Usage
-- *datetime* -- A left click will toggle long and short displays. The short version is displayed in the format `HH:MM`. The long version also shows the day of the week, weeknumber, date and seconds.
-- *audio* -- Current audio output level. `instance=mic` will show the microphone input level instead.
-- *ram* -- Free ram and swap are shown in the format `a+b G` where `a` is ram and `b` is swap. If you want to show ram and swap seperatly, use `instance=ram` or `instance=swap`.
-- *cpu* -- Total idle cpu time of all cores together. Use `instance=long` to show the percentage instead.
-- *temp* -- Current temperature of the cpu.
-- *battery* -- Total energy left of all batteries. Use `instance=x` to show the status of `BATx` in case you have more than one battery in `/sys/class/powersupply`.
-- *backlight* -- Brightness level. Use `instance=long` to show the brightness percentage. Use `instance="color"` to print the brightness level colored which is nice when using a device in battery mode.
+Some modules accept an `instance` argument:
+-- audio: default instance is audio output. The optional instance `mic` shows microphone information.
+-- battery: default instance collects informations from all attached batteries and treats them as one battery. The optional instance `BAT#` can be specified to display results only for battery #.
+-- ram: default instance collects information from physical memory and swap. The optional instances `phys` and `swap` only collect information for physical- and swap-memory respectiveley.
 
 # Requirements
 Install [i3 window manager](https://i3wm.org) alongside with [i3blocks](https://github.com/vivien/i3blocks) and `git`. The following shows the requirements for each module:
@@ -39,7 +36,6 @@ One-Liner: Open up a terminal and paste: `bash <(curl -s https://will.kein.hk/gi
 - Make sure you've added `bar { status_command i3blocks }` in your i3-config file (i.e. `~/config/i3/config`).
 - Finally reload your `i3` window manager. The default shortcut is `mod + SHIFT + r`, you should see a flickering.
 
-
 # Roadmap
 
 ## Modules
@@ -59,23 +55,28 @@ One-Liner: Open up a terminal and paste: `bash <(curl -s https://will.kein.hk/gi
 ## Refractor
 - [x] centralize color palette and progress bar in abstract.sh
 - [x] centralize long/short view in abstract.sh
-- [ ] make long/short permanent: rewrite config + i3reload? how to make it permanent?
-- [ ] the progress bar logic seems to repeat itself again and again, this can be done better
+- [x] centralize color/blackwhite view in abstract.sh
+- [x] make long/short permanent
+- [x] make color/blackwhite permanent
+- [x] the progress bar logic seems to repeat itself again and again, this can be done better
 
 ## Click interactions
 
-### Long/Short preview: Middle click
-- [ ] Toggle long (numbers and units) and short (representative bar) preview
+### Long/Short preview: Left click
+- [x] Toggle long (numbers and units) and short (representative bar) preview
+
+### Color/Blackwhite preview: right click
+- [x] Toggle color and blackwhite preview
 
 ### Open another program: Left click
-- [c] audio/mic: open pavucontrol
-- [c] ram/cpu/temp: open htop
-- [c] storage: open ranger
-- [c] ip: middle: open firefox
+- [x] audio/mic: pavucontrol
+- [x] ram/cpu/temp: htop
+- [x] storage: ranger
+- [x] ip: firefox
 - [ ] mount: mount it somewhere (with pmount?) and open ranger
 
 ### Other behaviour
-- [c] audio/mic: toggle mute
+- [c] audio/mic: toggle mute, TODO: conflicte with color toggle
 - [ ] onn/off behaviour: backlight, ethernet, audio, mic
 
 ## Signals
diff --git a/config b/config
index 9885a0d..2d36f75 100644
--- a/config
+++ b/config
@@ -9,8 +9,7 @@ interval=5
 label=☼
 # label=☀,☼,✱,✲,✳,✴,✵,✺
 signal=3
-instance=color
-# instance=color,bw
+# instance=color
 
 # [iface]
 # label=iface
@@ -20,11 +19,11 @@ instance=color
 # label=⛀,⛁,⛂,⛃
 # interval=60
 
-# if you want to display ram and swap seperately, you can assign another [ram] module
-# with instance=ram or instance=swap
+# if you want to display physical ram and swap seperately, you can assign another [ram] module
+# with instance=phys or instance=swap
 [ram]
 label=⚟
-instance=ram
+# instance=phys
 # [ram]
 # instance=swap
 
@@ -61,16 +60,16 @@ interval=60
 
 [audio]
 label=◍
+# label=♩,♪,♫,♬
 signal=1
 interval=once
-instance=color
-# label=♩,♪,♫,♬
+# instance=color
 # separator_block_width=0
 [audio]
 label=◎
-signal=2
 # label=⋓ℹ⋒ⅈ
-instance=mic,color
+signal=2
+instance=mic
 interval=once
 
 [datetime]
diff --git a/modules/abstract.sh b/modules/abstract.sh
index b6823a2..04c44f9 100755
--- a/modules/abstract.sh
+++ b/modules/abstract.sh
@@ -1,7 +1,7 @@
 # click interactions
-[[ "$BLOCK_INSTANCE" =~ "color" ]] && COLORS=True
 ## toggle long and short preview
-STATE="${HOME}/.config/i3blocks/modules/${1}.state"
+STATE="${HOME}/.config/i3blocks/modules/${1}-${BLOCK_INSTANCE}.long"
+COLORS="${HOME}/.config/i3blocks/modules/${1}-${BLOCK_INSTANCE}.color"
 if [[ "$BLOCK_BUTTON" == 1 ]]; then
     if [[ -f "$STATE" ]]; then
         rm $STATE
@@ -14,6 +14,18 @@ else
     [[ -f "$STATE" ]] && LONG=true || LONG=false
 fi
 
+## toggle color and black/white mode
+if [[ "$BLOCK_BUTTON" == 3 ]]; then
+    if [[ -f "$COLORS" ]]; then
+        rm $COLORS
+        COLORS=false
+    else
+        touch $COLORS
+        COLORS=true
+    fi
+else
+    [[ -f "$COLORS" ]] && COLORS=true || COLORS=false
+fi
 
 # global variables
 BAR=("▁" "▂" "▃" "▄" "▅" "▆" "▇" "█")
@@ -24,7 +36,6 @@ BW=("#565656" "#6d6d6d" "#848485" "#9c9c9c" "#b1b1b1" "#c7c7c7" "#dcdcdc" "#f5f5
 # get $LOAD, $LONG_TEXT and $SHORT_TEXT
 source $HOME/.config/i3blocks/modules/${1}.sh
 
-
 # text
 if [[ "$LOAD" = false && "$LONG" = false ]]; then
     echo $SHORT_TEXT
@@ -45,6 +56,6 @@ fi
 # colors
 for i in "${!BW[@]}"; do
     if [[ $LOAD -lt $((($i+1) * $INTERVAL)) ]]; then
-        [[ $COLORS ]] && echo "${COLOR[$i]}" || echo "${BW[$i]}"
+        [[ "$COLORS" = true ]] && echo "${COLOR[$i]}" || echo "${BW[$i]}"
     fi
 done
diff --git a/modules/audio.sh b/modules/audio.sh
index 53bd5c7..38ecb8f 100644
--- a/modules/audio.sh
+++ b/modules/audio.sh
@@ -14,7 +14,7 @@ if [[ $(amixer get $DEV) =~ \[([0-9]+)\%\][[:space:]]\[(on|off)\] ]]; then
         LOAD=false
     fi
 else
-    LONG_TEXT="no audio source"
+    LONG_TEXT="Audio source not found"
     SHORT_TEXT="n/a"
     LOAD=false
 fi
diff --git a/modules/backlight-.color b/modules/backlight-.color
new file mode 100644
index 0000000..e69de29
diff --git a/modules/ram.sh b/modules/ram.sh
index c666192..fd01c1a 100644
--- a/modules/ram.sh
+++ b/modules/ram.sh
@@ -1,26 +1,16 @@
 [[ "$BLOCK_BUTTON" == 2 ]] && i3-sensible-terminal -e htop
-
 [[ $BLOCK_INSTANCE =~ (phys|swap) ]] && TYPE=${BASH_REMATCH[1]}
 
 MEMINFO=$(cat /proc/meminfo)
-if [[ $MEMINFO =~ MemTotal:[[:space:]]+([0-9]+) ]]; then
-    PHYS_TOTAL=${BASH_REMATCH[1]}
-    PHYS_TOTAL=$((${PHYS_TOTAL} / 1024**2))
-fi
+[[ $MEMINFO =~ MemTotal:[[:space:]]+([0-9]+) ]] && PHYS_TOTAL=$((${BASH_REMATCH[1]} / 1024**2))
 if [[ $MEMINFO =~ MemAvailable:[[:space:]]+([0-9]+) ]]; then
-    PHYS_AVAILABLE=${BASH_REMATCH[1]}
-    PHYS_AVAILABLE=$((${PHYS_AVAILABLE} / 1024**2))
-    PHYS_AVAILABLE_M=$((${PHYS_AVAILABLE} / 1024))
-fi
-if [[ $MEMINFO =~ SwapTotal:[[:space:]]+([0-9]+) ]]; then
-    SWAP_TOTAL=${BASH_REMATCH[1]}
-    SWAP_TOTAL=$((${SWAP_TOTAL} / 1024**2))
+    [[ ${BASH_REMATCH[1]} -gt 2000000 ]] && PHYS_AVAILABLE=$((${BASH_REMATCH[1]} / 1024**2)) || PHYS_AVAILABLE=$((${BASH_REMATCH[1]} / 1024))
 fi
+[[ $MEMINFO =~ SwapTotal:[[:space:]]+([0-9]+) ]] && SWAP_TOTAL=$((${BASH_REMATCH[1]} / 1024**2))
 if [[ $MEMINFO =~ SwapFree:[[:space:]]+([0-9]+) ]]; then
-    SWAP_AVAILABLE=${BASH_REMATCH[1]}
-    SWAP_AVAILABLE=$((${SWAP_AVAILABLE} / 1024**2))
-    SWAP_AVAILABLE_M=$((${SWAP_AVAILABLE} / 1024))
+    [[ ${BASH_REMATCH[1]} -gt 2000000 ]] && SWAP_AVAILABLE=$((${BASH_REMATCH[1]} / 1024**2)) || SWAP_AVAILABLE=$((${BASH_REMATCH[1]} / 1024))
 fi
+[[ ! $PHYS_AVAILABLE || ! $PHYS_TOTAL || ! $SWAP_AVAILABLE || ! $SWAP_TOTAL ]] && printf "Ram not found\nn/a\n" && exit 33
 
 if [[ "$TYPE" == "" ]]; then
     MEM_FREE=$((${PHYS_AVAILABLE} + ${SWAP_AVAILABLE}))
@@ -29,13 +19,28 @@ if [[ "$TYPE" == "" ]]; then
         LONG_TEXT="${PHYS_AVAILABLE}+${SWAP_AVAILABLE}G"
         SHORT_TEXT="${PHYS_AVAILABLE}+${SWAP_AVAILABLE}G"
     else
-        LONG_TEXT="${PHYS_AVAILABLE_M}+${SWAP_AVAILABLE}M"
-        SHORT_TEXT="${PHYS_AVAILABLE_M}+${SWAP_AVAILABLE}M"
+        LONG_TEXT="${PHYS_AVAILABLE}+${SWAP_AVAILABLE}M"
+        SHORT_TEXT="${PHYS_AVAILABLE}+${SWAP_AVAILABLE}M"
     fi
-elif [[ "$TYPE" == "ram" ]]; then
+elif [[ "$TYPE" == "phys" ]]; then
     MEM_FREE=${PHYS_AVAILABLE}
     MEM_TOTAL=${PHYS_TOTAL}
+    if [[ "$MEM_FREE" -gt 2 ]]; then
+        LONG_TEXT="${PHYS_AVAILABLE}G"
+        SHORT_TEXT="${PHYS_AVAILABLE}G"
+    else
+        LONG_TEXT="${PHYS_AVAILABLE}M"
+        SHORT_TEXT="${PHYS_AVAILABLE}M"
+    fi
 elif [[ "$TYPE" == "swap" ]]; then
     MEM_FREE=${SWAP_AVAILABLE}
     MEM_TOTAL=${SWAP_TOTAL}
+    if [[ "$MEM_FREE" -gt 2 ]]; then
+        LONG_TEXT="${SWAP_AVAILABLE}G"
+        SHORT_TEXT="${SWAP_AVAILABLE}G"
+    else
+        LONG_TEXT="${SWAP_AVAILABLE}M"
+        SHORT_TEXT="${SWAP_AVAILABLE}M"
+    fi
 fi
+LOAD=$(((${MEM_TOTAL} - ${MEM_FREE}) * 100 / ${MEM_TOTAL}))