if you match the style of trim, but not the color,
That seems like a workable idea. I had them use a basic wedge profile on the window (Like this because it's a 1960s house and pretending otherwise seemed silly), but with one minor detail. The top and sides have a narrow trim that 'matches' the original beat-up mahogany in size, but the bottom piece, under the sill, is wider. I did it that way because it helped hide places where the wall was beat up, but also for some bottom-weight, visually. I suppose that means I could use wider baseboards if I wanted and it would still match, after a fashion!
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That seems like a workable idea. I had them use a basic wedge profile on the window (Like this because it's a 1960s house and pretending otherwise seemed silly), but with one minor detail. The top and sides have a narrow trim that 'matches' the original beat-up mahogany in size, but the bottom piece, under the sill, is wider. I did it that way because it helped hide places where the wall was beat up, but also for some bottom-weight, visually. I suppose that means I could use wider baseboards if I wanted and it would still match, after a fashion!