The task is to redraw the indicated icons in a style that looks "modern" and fits with the surrounding UI, with particular attention to transparency, flatness and color.
Icons for "variables" (blue hexagon and white hexagon with blue outline) - no change to color or shape. The variable icons have "overlay" icons
Other icons in the tree for "tools" - the images inside the icons are OK as metaphors (for example, decision tree has three miniature variable icons connected by lines) and could be just redrawn without redesign.
However, if the designer wants to propose redesign, we would consider that.
Before undertaking redesign, the designer would be given a visual tour of our software, Neota Logic Author, in order to understand the purpose of each tool in order to inform the selection of a different metaphoric image.
Icons in the toolbars can be redesigned - if their functionality is not obvious, the tour will explain.
Must work on Windows 7 or above and Mac OS, including Retina displays. Neota Logic Author itself is written in Java Swing.
There are a few more icons not shown on the screenshot. Copies of the bitmap files for all icons will be provided. Maximum size for tree icons is approximately 25px width x 20px height. A size will be specified before the work is done.