Update index.md

docs/src/index.md

@@ -15,7 +15,7 @@ P(<a href='https://control-toolbox.org/docs/ctproblems/stable/'>CTProblems</a>)
 P --> B
 F --> B
 D --> B
-style F fill:#FFF0F5
+style F fill:#FBF275
 ```
 
 !!! note "Install"
@@ -25,4 +25,4 @@ style F fill:#FFF0F5
 
 It aims to provide tools to solve [mathematical flows](https://en.wikipedia.org/w/index.php?title=Flow_(mathematics)&oldid=1147546136#Flows_of_vector_fields_on_manifolds) of vector fields, and in particular [Hamiltonian vector fields](https://en.wikipedia.org/w/index.php?title=Hamiltonian_vector_field&oldid=1065470192) directly from the definition of the Hamiltonian, using automatic differentiation to construct the assiocated Hamiltonian vector field.
 
-The flow is then computed thanks to [OrdinaryDiffEq.jl](https://docs.sciml.ai/DiffEqDocs/stable/) package.
+The flow is then computed thanks to [OrdinaryDiffEq.jl](https://docs.sciml.ai/DiffEqDocs/stable/) package.