# Improvements to colormaps / color ranges

**URL:** https://discourse.paraview.org/t/improvements-to-colormaps-color-ranges/12754
**Category:** Feature Requests
**Created:** [August 25, 2023, 8:47pm UTC](https://discourse.paraview.org/t/improvements-to-colormaps-color-ranges/12754 "2023-08-25T20:47:01Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![GregVernon](https://discourse.paraview.org/user_avatar/discourse.paraview.org/gregvernon/32/1494_2.png) [@GregVernon](https://discourse.paraview.org/u/GregVernon)
#### Post date: [October 18, 2024, 8:41pm UTC](https://discourse.paraview.org/t/improvements-to-colormaps-color-ranges/12754/6 "2024-10-18T20:41:03Z")

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No, I mean one that goes blue-to-white, and another that goes white-to-red.

As an example, consider the below simulation of a door lock hinge assembly. Below is a plot of `equivalent plastic strain` which, by definition, only contains values `[0, +inf]`:

 ![image](https://discourse.paraview.org/uploads/default/original/2X/3/385fb2f526fd6a86a3fd48e22607e636b80352e2.jpeg)

I’d rather show this as a linear colormap from white-\>red (here using the `Reds` colormap, inverted):

 ![image](https://discourse.paraview.org/uploads/default/original/2X/9/9b5300e281254fa88212d9c6f39279c237dda801.jpeg)

If we had a `FAST Positive` or `FAST Reds` (and equivalent for the blues) then I can guarantee that my contour plots will look consistent between plotting values constrained to either all-negative (e.g., \Delta T in a dissipative thermal simulation with no internal heat source) or all-positive (e.g., \sigma\_{\text{Mises}}), and a plot of values that are not constrained/limited to one side of the reals (e.g., \sigma\_{xy} )

Here, btw, is what this looks like with `FAST Reds` that I created manually:

 ![image](https://discourse.paraview.org/uploads/default/original/2X/8/83b0ad00dc452a762dcc3cbadd340be6372c7147.jpeg)

I know how to create colormaps manually ([here’s a video I recorded to make the above colormap](https://www.youtube.com/watch?v=Y8ez42kgpj8)), but it’d be nice to not have to do this on every computer at my organization / every time I get a new computer / every new server / etc.

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_[View the full topic](https://discourse.paraview.org/t/improvements-to-colormaps-color-ranges/12754)._