The line for this box should be thin-say 0.002" wide-in order to be recognized by the Epilog print driver as a vector to be cut. 3/4" high by a bit under 2" wide should give you plenty of room, and let you cut plenty of test strips out of scrap acrylic. Create a rectangular box for the outside of the strip. Just to confuse things, Inkscape also shows colors as RGBA-the last 2 digits are the opacity, and usually ff for 100%.
Red, for example, is 255,0,0 in decimal, or ff0000 in hex. Any RGB color is represented by 3 numbers in order. Changing between the hex and decimal values for the purpose of this project is simple-you just need to know 3 mappings: (full) 255 decimal = ff hex, (half) 128 decimal=80 hex, and (off) 0 decimal = 00 hex. (Setting colors in another color “space” can make it difficult-if not nearly impossible-to match in the Epilog driver.) RGB format lists the Red, Green, and Blue components of the color using one of two formats-"hex" (hexadecimal, or base-16) and decimal (the common way of writing numbers). Inkscape makes it pretty easy to set and examine the colors in RGB format, which is also the format the Epilog driver uses for colors. Just picking a random “red” may not work. (If your laser driver uses a different method of specifying different power/speed settings-for example, line width-you'll need to substitute that parameter in place of line color in what follows.) Specifying colors When using the color mapping in the Epilog print driver, it is important to match the colors in your file exactly. The goal is produce a strip with a number of short vector cuts near one edge, each cut created using a different and specific RGB color that can be mapped to a different laser cutting speed. Otherwise, modify (e.g., the Inkscape SVG file attached) or create the artwork using a vector graphics program such as Inkscape (free and open-source), Corel Draw, Illustrator, or similar.
If you have a 50W Epilog laser, just use the attached PDF file.
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