Collections: Add color tagging

This adds color tagging to collections. There are 8 color
options which are themable in the user preferences, with an additional
option for no color tag by default.

This adds a new filled collection icon and 8 colored variants of the
icon that can be themed in the user preferences.

In this commit the only interface to setting the color tags is through
Python, and there is nowhere in the interface where the collections are
shown colored. Setting and viewing the color tags from the outliner will
follow.

Manifest Task: https://developer.blender.org/T77777

Differential Revision: https://developer.blender.org/D8622

1 files changed, 26 insertions, 0 deletions

diff --git a/release/datafiles/userdef/userdef_default_theme.c b/release/datafiles/userdef/userdef_default_theme.c
index 791630a1a9c..8cbb615491d 100644
--- a/release/datafiles/userdef/userdef_default_theme.c
+++ b/release/datafiles/userdef/userdef_default_theme.c
@@ -1103,6 +1103,32 @@ const bTheme U_theme_default = {
       .active = RGBA(0x000000ff),
     },
   },
+  .collection_color = {
+    {
+      .color = RGBA(0xe4312bff),
+    },
+    {
+      .color = RGBA(0xef7e42ff),
+    },
+    {
+      .color = RGBA(0xe4dd52ff),
+    },
+    {
+      .color = RGBA(0x9ac546ff),
+    },
+    {
+      .color = RGBA(0x46bcc2ff),
+    },
+    {
+      .color = RGBA(0x8b65dcff),
+    },
+    {
+      .color = RGBA(0x999999ff),
+    },
+    {
+      .color = RGBA(0x06d4432ff),
+    },
+  },
 };
 
 /* clang-format on */