For my oil work, I use one of two types of wooden painted frames: a soft gold color, and a warm silver color; but have the same profiles. I use one or the other depending upon the dominant temperature of the painting. Most are very simple with a similar width of the frame - about 3 1/2 inches. Some have no decoration at all, some have a bit in the corners. But they are all compatible in appearance, and have a unified look when hung. (I group the golds and silvers separately - I don't like two-tone jewelry either
).
Below are some of my favorites from
Abend Art. They are reasonably priced. I like the black liner for some pieces, it has a deco feel and makes a painting look formal.
For my western paintings, all have a weathered barnwood look - same frame width, some have a linen liner, some don't. Still they all look like part of a series when hung.
For my pastels, I framed them all the same. Same mat, same width of the mat, proportional to the frame, same gold satin finish metal frame. That's not to say I don't occasionally add a Baroque style in with the gold wood, or make other choices. But mainly I want a cohesive look in standard sizes so that I can change out paintings easily.