I have a very large collection of "Drawing Objects" created in MS PowerPoint
2003. In most cases, there are multiple graphics saved as a file with only
one slide.

Having moved up(?) to MS PowerPoint 2007 I decided to save all my old files
in the new .pptx format. While re-arranging many of the graphics into
different slides I noted that in many cases the fill and line colors would
drastically change when pasted into the new slide.

I further discovered that this same thing actually occurs when creating a
graphic (Drawing Object) in one 2007 presentation and simply pasting it into
another 2007 presentation. Experimenting, I found that it has something to do
with "THEMES".

I found a related query in this forum "PowerPoint General Question" by
joe_btfsplk on 6/13/2007, but the answers only related to importing entire
slides...

I want to be able to copy and paste individual graphic creations (complex
grouped Drawing Objects) from multiple presentations into one new
presentation WITHOUT having any of the colors changing.

With the 2003 version this is not an issue... what am I missing with 2007?