TLDR

(:instruction
 (commando/execute
   [command-builtin/command-from-spec
    (command-builtin/command-context-spec
      {:theme-configuration {:background-color "#FF0000"
                             :color "#040404"}})]
   {:button-style 
    {:background-color {:commando/context [:theme-configuration :background-color]}
     :color            {:commando/context [:theme-configuration :color]}
     :border           {:commando/context [:theme-configuration :border] :default "1px solid red"}}}))
;; => 
{:button-style
 {:background-color "#FF0000",
  :color "#040404",
  :border "1px solid red"}}

command-builtin/command-context-spec - the first "dynamic" command, which just enclose data inside and gave access via :commando/context. In practice user easily may create it's own context by copying code of this one. To enclose his own , maybe even mutable types/object what can even increase performance. Context have :none dependency, what also dont overload dependency managment logic.

This solution is ready architectural solution what indeed help user to concentrate on the flow inside of instruction and hide ennecessary or unsecured stuffs. With help of Registry overriding it may significantly increase perfrormance on the frontend where commando may run in cycle multiple time at a second, because operatoin very cheap by design.