school font, coloured line

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I would like to color the horizontal lines in the attached font with one color, e.g. blue (#33ccff). What is the easiest way to do this?

The way I asked before may help you

How to generate composite glyphs in batches?

I think it’s okay to add compound fonts to my fonts manually, but how do I import and generate fonts in the form of XML code? What are the specific steps?How to generate composite glyphs in batches? [image] [image]