Btm Fix

Bottom (btm) now uses `--theme` instead of `--color` to set the theme.
Changed the zsh configuration to reflect this in the new version of
bottom.

zsh/dot-zshrc

@@ -3,7 +3,7 @@
 ############### ALIASES ####################
 
 # Load bottom with the proper color scheme
-alias btm="btm --color=gruvbox"
+alias btm="btm --theme=gruvbox" 
 
 # Remap ls to use lsd
 alias ls="lsd"