Dash - all category header icons used in the Dash need to consist of white outlines only

[John Lea]

All category header icons used in the Dash need to consist of white outlines only. See attached image "incorrect_category_header_icons.png" ( this image also shows other layout bugs ) which shows coloured category header icons being used in Dash. The category header icons need to be white outlines only in the style of the default Dash Lenses. If white outline icons are not supplied, we should force the white outlines by applying a shader to convert the icons to B&W monochromatic outlines.

[Yann Dìnendal (yannbreliere)]

John Lea: I think you forgot to attach "incorrect_category_header_icons.png"?

[Tim Penhey (thumper)]

I'm not sure how you propose that we enforce this for other lens developers.

[Sebastien Bacher (seb128)]

Seems like rather something that the guidelines should recommend to lens developpers than something unity can fix on its side