I had a couple of thoughts regarding the theme and widgets:
- I find the caret colour/width too thin and dark in the text boxes - it's very hard for me to see, so I don't always know where the caret is. Any way to lighten it and/or thicken it by a pixel?
- "Light", "medium", and "dark" themes might be nice if it were easy to switch between them to see how your icons might look on different backgrounds.