See updated node palette in image below.
1) node colors were changed from #a6bbcf to #87A980
2) more intuitive icons were selected and/or created
3) for output nodes (RELAY, DOUT, LED, and DAC), the icons were right-justified
4) node labels were simplified and/or made specific using the Palette Label property. This approach was taken to avoid breaking existing flows.
See updated node palette in image below. 1) node colors were changed from #a6bbcf to #87A980 2) more intuitive icons were selected and/or created 3) for output nodes (RELAY, DOUT, LED, and DAC), the icons were right-justified 4) node labels were simplified and/or made specific using the Palette Label property. This approach was taken to avoid breaking existing flows.