Hello LEED users!

I'm working on a project focused on achieving too the Pilot Credit for Heat Island Mitigation using Cool Walls, with Sherwin Williams as the paint manufacturer. However, they haven't provided the Thermal Emittance values for the used paints. Has anyone successfully documented this Pilot Credit by comparing the paint used in the project with another paint from the same manufacturer that does include SRI and Thermal Emittance values?