Vector: Remove misleading comment

What it says it's true, but it's now abstracted away in the mixin.

Change-Id: If4761b5b9c2153553cc293d7ecf4fdd5a28c47da
Vector: Consistently use lowercase in #rrggbb colors

Change-Id: I174781b199260790d18aac2a6c270282396f2812
Merge "Vector: Remove misleading comment"
Merge "Vector: Consistently use lowercase in #rrggbb colors"