This is what Rivian's Limestone paint color option on the R1T and R1S should look like in the flesh.
That's what has me interested in seeing the contrast between Limestone and LA Silver. Hopefully the don't make Limestone too light where both colors are similar.It's kind of hard to tell since the Rivian shown in the top pic is once again just a render!!! Limestone will likely be a lighter shade with a bit more of a greenish tint based on the swatches that were shown at the launch event in Normal. The above appear more "concrete" and greyish than Limestone to my eyes.
I only switched out of Limestone to Launch Green once I actually saw the real-world pics of the launch green and realized how different it was than the images in the renders and the configurator. I could be totally wrong but Limestone will likely appear lighter than the above pics - particularly in full sun. I think Limestone will still be awesome, but I like the Launch Green equally as much now that I have seen it (and don't need to pay extra for something that will be limited to LE vehicles only). Launch Green and Limestone both really accentuate the wheels well and are awesome colors