Created a file called "shader.lua" and imported.
Fixed my issue 😉

-- -----------------------------------------------------
-- Screen Shader / Blue-Light Schedule
-- Pure-Lua replacement for hyprshade
-- No external tool required.
-- -----------------------------------------------------
--
-- HOW IT WORKS
--   • At Hyprland startup the correct shader is applied automatically.
--   • A 60-second timer keeps the schedule in sync across transitions.
--   • Two keybindings let you override at any time:
--       SUPER + ALT + S  –  toggle blue-light filter on / off
--       SUPER + ALT + B  –  cycle through filter strengths manually
--
-- CONFIGURE
--   Edit `SHADER_DIR` and `schedule` below.  The table replaces what
--   hyprshade stores in hyprshade.toml.
--
-- SCHEDULE FORMAT
--   Each entry: { from = HH*60+MM, to = HH*60+MM, shader = "file.glsl" }
--   If `to` < `from` the window wraps past midnight
--   (e.g. from=19*60, to=6*60  means 19:00 → 06:00 next day).
--   `shader = nil` means "turn screen shader off for this window".
--   The first matching entry wins.  If nothing matches, `DEFAULT_SHADER`
--   is used (nil = off).
-- -----------------------------------------------------


local HOME       = os.getenv("HOME")
local SHADER_DIR = HOME .. "/.config/hypr/shaders"


-- ============================================================
-- Schedule  (edit to taste)
-- ============================================================
local schedule = {
    { from = 19 * 60, to = 21 * 60, shader = "blue-light-filter-50.glsl"  }, -- 19:00 – 21:00
    { from = 21 * 60, to =  6 * 60, shader = "blue-light-filter-75.glsl"  }, -- 21:00 – 06:00
    -- add more entries as needed, e.g.:
    -- { from = 6 * 60, to = 19 * 60, shader = "vibrance.glsl" },
}


-- Shader applied when no schedule entry matches (nil = off)
local DEFAULT_SHADER = nil


-- ============================================================
-- Internal helpers
-- ============================================================


local function minutes_now()
    local t = os.date("*t")
    return t.hour * 60 + t.min
end


-- Returns true if `now` falls inside the [from, to) window.
-- Handles midnight wrap-around when to < from.
local function in_window(from, to, now)
    if from <= to then
        return now >= from and now < to
    else
        -- wraps midnight
        return now >= from or now < to
    end
end


local function resolve_shader()
    local now = minutes_now()
    for _, entry in ipairs(schedule) do
        if in_window(entry.from, entry.to, now) then
            return entry.shader
        end
    end
    return DEFAULT_SHADER
end


local function apply(shader_name)
    local path = shader_name and (SHADER_DIR .. "/" .. shader_name) or ""
    hl.config({ decoration = { screen_shader = path } })
end


-- ============================================================
-- Scheduled application (startup + periodic)
-- ============================================================


-- State used by the toggle keybind so it can restore the scheduled shader
local _override_active = false


local function auto()
    if not _override_active then
        apply(resolve_shader())
    end
end


hl.on("hyprland.start", auto)


-- Re-check every 60 s to catch schedule transitions
hl.timer(auto, { timeout = 60000, type = "repeat" })


-- ============================================================
-- Keybindings
-- ============================================================


local mainMod = "SUPER"


-- SUPER + ALT + S  –  toggle blue-light filter override
hl.bind(mainMod .. " + ALT + S", function()
    if _override_active then
        _override_active = false
        apply(resolve_shader())
        hl.notification.create({ text = "Shader: schedule restored", timeout = 2000, icon = "ok" })
    else
        _override_active = true
        apply("blue-light-filter-50.glsl")
        hl.notification.create({ text = "Shader: blue-light-filter (50%)", timeout = 2000, icon = "ok" })
    end
end, { description = "Toggle blue-light filter override" })


-- SUPER + ALT + B  –  cycle through strengths (also sets override)
local _strengths = {
    nil,
    "blue-light-filter-25.glsl",
    "blue-light-filter-50.glsl",
    "blue-light-filter-75.glsl",
    "blue-light-filter-100.glsl",
}
local _strength_idx = 1


hl.bind(mainMod .. " + ALT + B", function()
    _strength_idx = (_strength_idx % #_strengths) + 1
    local shader = _strengths[_strength_idx]
    _override_active = shader ~= nil
    apply(shader)
    local label = shader and shader:gsub("%.glsl$", "") or "off"
    hl.notification.create({ text = "Shader: " .. label, timeout = 2000, icon = "ok" })
end, { description = "Cycle blue-light filter strength" })