TrayIcon: get the black background and outline for palette popup - SL #4089
TrayIcon: get the black background and outline for palette popup - SL #4089

Do the same as in ToolButton, update do_draw method to do the drawing
in the code.

Signed-off-by: Simon Schampijer <088e16a1019277b15d58faf0541e11910eb756f6@laptop.org>
Acked-by: Manuel Quiñones <6f5069c5b6be23302a13accec56587944be09079@laptop.org>

quozl/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,samdroid-apps/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,sugarlabs/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,ceibal-tatu/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3