Now here's an enlargement of the lower part of the centre of the leaf. The contrast in this picture has been increased so that you can see the veins clearly.
The leaf, like most leaves, is green. However, some plants have red leaves. Here's what it might look like as a red leaf. To produce this picture, a bit of tweaking was done in the graphics program.
It's amazing what you can do with computer graphics programs. Here is another version of exactly the same part of the leaf. The colours and apparently new shapes were not manually painted in. They were done automatically by the computer, working on the lines, shapes and areas already in the original scan. A 'crayon' tool was used to do this. It added new colours to the very small lines and segments which you can hardly see in the previous scans.
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