diff --git a/lua/colorful_diff/config.lua b/lua/colorful_diff/config.lua
new file mode 100644
index 0000000..61b7d32
--- /dev/null
+++ b/lua/colorful_diff/config.lua
@@ -0,0 +1,12 @@
+local config = {
+	colors = {
+		diff = "#555522",
+		origin = "#225555",
+	},
+}
+
+function config.update(user_config)
+	config.colors = vim.tbl_deep_extend("force", config.colors, user_config.colors or {})
+end
+
+return config
diff --git a/lua/colorful_diff/init.lua b/lua/colorful_diff/init.lua
index 518dbea..6a38025 100644
--- a/lua/colorful_diff/init.lua
+++ b/lua/colorful_diff/init.lua
@@ -1,9 +1,21 @@
 local myTint = require("colorful_diff.tint")
-myTint.InitHighlightGroup("#444422", "#224444")
+local config = require("colorful_diff.config")
 local buffer_change = require("colorful_diff.buffer_change")
 
--- Set up autocmd to call our function on buffer change and when a file is opened
-vim.api.nvim_create_autocmd({ "TextChanged", "TextChangedI", "BufRead" }, {
-	pattern = "*",
-	callback = buffer_change.on_buffer_change,
-})
+local M = {}
+
+function M.setup(user_config)
+	-- Merge user config with default config
+	config.update(user_config or {})
+
+	-- Initialize highlight groups
+	myTint.InitHighlightGroup(config.colors.diff, config.colors.origin)
+
+	-- Set up autocmd to call our function on buffer change and when a file is opened
+	vim.api.nvim_create_autocmd({ "TextChanged", "TextChangedI", "BufRead" }, {
+		pattern = "*",
+		callback = buffer_change.on_buffer_change,
+	})
+end
+
+return M
diff --git a/plugin/hello.lua b/plugin/hello.lua
index bfddfc4..558531a 100644
--- a/plugin/hello.lua
+++ b/plugin/hello.lua
@@ -1,2 +1 @@
-require("colorful_diff")
-print("Hello, this is ColorfulDiff.nvim")
+-- put any code you want to execute onstart here