CRM 2015 Update 1: Themes and UI Mapping Dictionary

Here is the mapping between actual UI and the Theme Attributes value in new CRM 2015 Update 1 version

Navigation Bar

Form Navigation

Entity View navigation

Form

#1 System User Form (as Example)

#2 Case With Business Process Flow (as Example)

View

#1 Main Entity View

#2 Sub-Grid View

#3 Associated View

Legend

Logo

Logo Tooltip: Miss Dynamics CRM

Color

No	Attribute Name	Color
1	Navigation Bar Color
2	Navigation bar Shelf Color
3	Header Color
4	Global Link Color
5	Selected Link Effect
6	Hover Link Effect
7	Process Control Color
8	Default Entity Color
9	Default Custom Entity Color
10	Control Shade
11	Control Border

If you see different color for entities in the sitemap (such as Lead and Opportunity, and also Product), so it means they have been modified individually through Customization.

http://missdynamicscrm.blogspot.sg/2015/05/crm-2015-update-1-sitemap-entity-color.html

For the detail info, I have posted to this post..

And hope this helps!
Thanks.