beam colorsbeam.css file, change the hex color code in the custom property --main: #1f38c5 to a different color
#008000how-to/bar.svg file using a text editor and search for #1f38c5. Replace #1f38c5 with a different color, e.g., #008000. Save the .svg file.Encode the .svg file to base64 format. For instance, you may use the following webapp: https://fffuel.co/eeencode/. Drag and drop the .svg file and copy the Data URI (data:image/svg+xml;...)
beam.css file, locate section and the background-image property. Replace the original URI with the new URI generated in step 3.