Colors for waveform and numeric data on clinical monitors

The HL7-FHIR Devices group are currently reviewing the DeviceMetric resource for FHIR v5. The resource includes a devicemetric.color valueset.

There is a very useful summary of the clinical value and potential problems of associating waveform and numeric data from clinical monitors with specific colors.

https://www.apsf.org/article/colors-for-ecg-tracings-spo2-pulse-oximetry-on-patient-monitors-in-the-or-and-icu/

The discussion in the FHIR group related to use of a coded valueset to represent colors, as opposed to just an ordinal list of  red, green, blue etc

My question - is there a valueset in SNOMED that can be used as a reference? I searched but drew a blank.