update readmes, documenation, and expose more colors in colors

colors.txt

@@ -1,6 +1,6 @@
 in the css
 
-@import url("https://styles.alv.cx/colors/<colorscheme>.css");
+	@import url("https://styles.alv.cx/colors/<colorscheme>.css");
 
 and use the variables created in the file
 
@@ -15,8 +15,8 @@ switching between colorschemes easily)
 	--blue
 	--purple
 
-	--light
-	--dark
+	--colorscheme-light
+	--colorscheme-dark
 
-prefer to use `--fg` and `--bg` and be careful with using `--light` and `--dark`
-as it may make light/dark mode switching a pain
+colorschemes also have their own custom colors inside, which can be used if
+switching themes is not a concern.