gnu: Add rust-coolor-0.5.

* gnu/packages/crates-io.scm (rust-coolor-0.5): New variable.

gnu/packages/crates-io.scm

@@ -13777,6 +13777,29 @@ It supports signed and private (encrypted + signed) jars.")
 similar to the nom parser combinators library.")
     (license license:expat)))
 
+(define-public rust-coolor-0.5
+  (package
+    (name "rust-coolor")
+    (version "0.5.1")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "coolor" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "11pvplrm51xjr0mmhwrjaif6vd7p2xpmdbwd0rbx2kr4iq4c4smd"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-crossterm" ,rust-crossterm-0.25))
+       #:cargo-development-inputs
+       (("rust-crossterm" ,rust-crossterm-0.25)
+        ("rust-rand" ,rust-rand-0.8))))
+    (home-page "https://github.com/Canop/coolor")
+    (synopsis "conversion between color formats")
+    (description "conversion between color formats")
+    (license license:expat)))
+
 (define-public rust-copyless-0.1
   (package
     (name "rust-copyless")